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Finding the Fourth Proportional to 385,145.44, 577,730 and 104,668.64

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Solution

The fourth proportional to 385,145.44, 577,730 and 104,668.64 is: 157,006.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,145.44 : 577,730 = 104,668.64 : x
  2. Step 2: Convert to fraction form
    385,145.44/577,730 = 104,668.64/x
  3. Step 3: Cross multiply
    385,145.44x = 577,730 × 104,668.64
  4. Step 4: Simplify right side
    385,145.44x = 60,470,213,387.20
  5. Step 5: Solve for x
    x = 60,470,213,387.20/385,145.44
  6. Step 6: Final answer
    x = 157,006.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.